The Spilhaus map of the oceans will be supported in the next release of ArcGIS

[BojanŠavrič]

In the upcoming release of ArcGIS 10.8 and ArcGIS Pro 2.5, the Spilhaus World Ocean Map in a Square will be supported as aprojected coordinate system based on the Adams square II map projection. 

Here is an ArcGIS StoryMap about how we uncovered and defined the projection, which shows the world’s oceans as a single body of water.

John Nelson already got his hands on it and made some maps. Here is his blog post Spilhaus? More like Thrillhaus.